EXHIBIT 21 Jurisdiction of Name Type of Entity Organization ---- -------------- ------------ ---------------------------------------------------------------------------------------------------- Equistar Mont Belvieu Corporation Corporation Delaware ---------------------------------------------------------------------------------------------------- Equistar Polypropylene, LLC Limited Liability Company Delaware ---------------------------------------------------------------------------------------------------- Equistar Funding Corporation Corporation Delaware ---------------------------------------------------------------------------------------------------- Equistar Chemicals de Mexico, Inc. Corporation Delaware ---------------------------------------------------------------------------------------------------- PD Glycol Limited Partnership Texas ---------------------------------------------------------------------------------------------------- Equistar Funding, LLC Limited Liability Company Delaware ---------------------------------------------------------------------------------------------------- Equistar Transportation Company, LLC Limited Liability Company Delaware ---------------------------------------------------------------------------------------------------- Quantum Pipeline Company Corporation Illinois ---------------------------------------------------------------------------------------------------- Lyondell-Equistar Holdings Partners General Partnership Delaware ---------------------------------------------------------------------------------------------------- EC Plastics Unlimited Liability Company Unlimited Liability Company Nova Scotia ---------------------------------------------------------------------------------------------------- Equistar Bayport, LLC Limited Liability Company Delaware ----------------------------------------------------------------------------------------------------